CM431 Datasheet, PDF (8/12 Pages) List of Unclassifed Manufacturers – LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR

CM431
LOW VOLTAGE ADJUSTABLE SHUNT REGULATOR
APPLICATION INFORMATION (continued)
VB_BATTB
8.2KΩ
LM317
Adjust
V_OB
B
=
5V/1.5A
243Ω
0.1%
CM431
243Ω
0.1%
VB_BATTB
CM431
I = _OB
B
V /R _REF B
B
S^B
B
R_SB
B
0.1%
Figure 8.Precision 5V, 1.5A Regulator
Figure 9. Precision Constant Current Sink
VB_BATTB
IN
OUT
78L05
V_OB
B
Common
R1
CM431
R2
VB_BATTB
R1
R_CL B
B
I_OB
B
0.1%
CM431
V_OB
B
=
(1
+
R1/R2)
×
VB_REF
Min
V_OB
B
=
V_REF B
B
+
5V
Figure 10. Output Control of a Three-Terminal
Fixed Regulator
I = (V /R ) + I _OUT B
B
REF ^B
B
CL ^B
B
K^B A
R1 = V /((I /h ) + I ) _BB _ATTB
O^B
B
FE ^B
B
KA ^B
B
Figure 11. Precision Current Limiter
2006/10/11 Rev.1.4
Champion Microelectronic Corporation
Page 8